Valve.



2"SHEETS-SHBET 1.

PATBNTED APR. 23, 1907.

VALVE.

APPLICATION FILED JULY 21. 1904.

M. M. MOORE.

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messes PATENTED APR. 23, 1907.

M. M. MOORE.

VALVE.

APPLICATION FILED JULYZ'I, 1904.

2 SHEETS-SIIBET 2.

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UNITED STATES PATENT OFFICE.

MOSES M..MOORE, OF CHICAGO, ILLINOIS, ASSIGNOR TO T. W. SNOIV, OFCHICAGO, ILLINOIS.

VALVE.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed July 27,1904. Serial No. 218,345.

T0 at whom it may concern..-

Be it known that I, Mosns M. MOORE, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Valves, of which the followingis a specification.

My invention relates particularly to tankvalves, such as are employed inconnection with railway water-tanks; and my primary object is to providea valve of improved con struction and operation, possessing greatfacility of operation and control.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a view partly in section and partly in elevation of awater-tank equipped with my improved valve; and Fig. 2, an enlargedbroken sectional view showing the construction of the valve.

In the construction shown, A represents a water-tank having connectedwith its bottom a discharge passage or spout A B, my improved valvemechanism located within the tank and guarding the discharge; and C, av

bell-crank lever serving to actuate the valve and which, in turn, issupplied with an operating rope C On the upper surface of the floor ofthe tank there is located at the discharge orifice a valveseat bcomprising a ring equipped interiorly with radial arms 12 supporting acentral guide 12 Upon the valve-seat is supported a valve b comprising acylindrical member equipped at its bottom with a suitable gasket restingupon the valve-seat and provided interiorly with arms I) terminating ina central hub b equipped with the downwardly projecting stem 6 workingin a guide b The upper side of the hub b is equipped with a divided lugb with which is pivotally connected an actuating stem Zr, whose upperend is pivotally joined to the short arm of the bell-crank lever C. At asuitable distance above the valve-seat is a chamber 1) having at itslower portion an external flange equipped with lugs 6 which are slottedto receive the reduced upper ends of bolts or standards 6 upon which thechamber 1) is adj ustably supported. The chamber 1) is open at its lowerend to receive the upper end of the valve I), and is provided adjacentto its opening with a packing-ring b which engages the cylindricalsurface of the valve. Connected with I) which tends to keep the valvenormally closed. The valve is virtually an annular valve having bottomcontact with the valveseat I) and side contact, or telescopicconnection, with the packing-ring I) of the chamber I)".

From the foregoing detailed description, the operation will be readilyunderstood. \Vhen it is desired to allow water to escape through thedischarge pipe A the cord C is drawn downwardly to actuate thebell-crank lever C, thereby lifting the valve through the medium of therod b This permits water to pass beneath the valve from all sides andescape through the annular valve-seat l). The valve is provided at itslower portion with a flange the upper surface of which is alwayssubjected to water pressure, and a portion only of the lower surface ofwhich is subjected to water pressure when the valve is closed. Thedifference in pressure is sufficient to maintain the valve in the closedposition, but is not sui'licient to render it diflicult to raise thevalve. hen the valve is wide open there is little or no tendency for itto close under the action of the escaping water, but the spring I) willoperate to lower it when the pull upon the cord C is released,permitting the valve to be closed to any desired position. After thevalve has been completely closed, the water escapes at once from thepipe A by reason of the fact that the air can pass readily from abovethrough the chamber b valve b and valve-seat b to the upper end of thepipe.

It should be observed that by reason of the slotted connection betweenthe standard I) and the lugs b the chamber I) may be adjusted laterallyto center the valve properly with relation to its seat. In practice,there is some looseness, or lost motion, at the pivotal connectionbetween the lower end of the rod 5 and the valve, so that the valve willproperly seat itself, regardless of the position maintained by itsactuating rod. The pivotal connection is made at as low a point aspossible, as may be readily inferred. It will be understood that thelateral pressure upon.

the valve is balanced, and that there is only such unbalanced downwardpressure upon the valve, due to the water, as is desired to maintain thevalve firmly upon its seat. It may be remarked that the pipe 12 inserving as a housing for the rod 6 will prevent ice from forming uponthe actuating rod during the cold weather, which is a feature ofadvantage incidental to my improved construction.

Changes in details of construction within the spirit of my invention arecontemplated, hence no undue limitation should be understood from theforegoing detailed description.

l/Vhat I regard as new, and desire to secure by Letters Patent, is

l. The combination with a tank having a discharge outlet at its bottomand a valve seat thereat provided with an upwardly presented seatingsurface and provided also with arms equipped with a central guide, of alaterally adjustable chamber supported at a distance above saidvalve-seat and having a closed top and an open bottom, an annular valvetelescopically connected with said chamber and having a stem moving insaid guide and having also an external flange subjected to unbalancedwater pressure, a discharge pipe beneath the valve-seat, a pipe joinedto the top of said chamber and eX tending to the upper portion of thetank, and an actuating rod extending through said second-named pipe andhaving articulated connection with the valve, for the purpose set forth.

2. The combination with a tank having a discharge outlet at its bottomand a valveseat on the upper surface of said bottom,of a laterallyadjustable chamber supported at a distance above said valve-seat, and avalve telescopically connected with said chamber, for the purpose setforth.

MOSES M. MOORE.

In presence of L. HEISLAR,

W. B. DAVIES.

